baber/WOPTO huggingface dataset:
Patent GB-1492963-A (GB)
Title: Preventing or reducing transmission of sound
IPC: F16L55/033
Filed: 1974-02-22
Abstract: 1492963 Noise abatement H LAWSONTANCRED 21 Feb 1975 [22 Feb 1974 23 May 1974 7 Aug 1974 23 Aug 1974 27 Aug 1974] 8142/74 23036/74 34825/74 37260/74 and 37303/74 Heading G5X A method for preventing or reducing the transmission of sound below about 500 Hz along an acoustic path, e.g. a heating or air conditioning duct, comprises detecting the sound at a first position in said path and reproducing it at a second position where it is out of phase with sound travelling along the path. As described in one embodiment microphone 12 generates a sound representative signal which is relayed along an alternative path and delayed in a circuit comprising amplifier 15, filters 16 and adder 17 and reproduced by speakers 14. The delay is such that the sound from speakers 14 is 180 degrees out of phase with that in path P. In an alternative embodiment, a single speaker is used, and baffles are placed in path P between microphone and speakers to prevent acoustic feedback. The phase change may also be introduced by a bucket brigade device. In a further embodiment, the alternative path is an acoustic path and the distance between the microphone in the alternative path and the first position is the same as from the first position to the speaker in path P (Fig. 4, not shown). In this case the phase change is introduced by appropriately connecting the microphone to the speaker. The invention may be used in liquid systems by using appropriate transducers such as piezoelectric and magneto-strictive devices.
Patent GB-402305-A (GB)
Title: Improvements in and relating to methods of operating converters with vapour-filled orgas-filled discharge vessels
IPC: H02H7/127
Filed: 1933-03-17
Abstract: 402,305. Converting. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts, Ges. ; 2, Friedrich Karl-Ufer, Berlin.) March 17, 1933, No. 8153. Convention date, March 17,1932. [Class 38 (ii).] Relates to overload and back-ignition protection in rectifier and inverter arrangements using grid-controlled vapour or gas discharge devices and consists in the provision of means for varying the saturation of the grid transformer in response to a predetermined load current to render the discharge devices non- conductive. In the form shown, a D.C. circuit 3 is supplied from an A.C. circuit 1 through a rectifier comprising valves 4, 5 the grids of which are supplied from a transformer 6 connected to the A.C. circuit through a phaseshifting transformer 7. The transformer 6 has a saturating winding 12 supplied from an auxiliary valve 13 the grid of which has a potential proportional to the load current applied to it from a resistance 14 in opposition to a D.C. bias 17. To obtain back-ignition protection the resistance 14 may be replaced by a current transformer the primary of which is connected in the A.C. circuit. The Specification states that an amplifier may be inserted between the resistance 14 and the grid circuit of the valve 13. The Specification as open to inspection under Sect. 91 states that the transformer 6 may be designed to give a peaky-wave form of grid potential. This subject-matter does not appear in the Specification as accepted.
Patent GB-1034627-A (GB)
Title: Catalytic systems for internal combustion engines
IPC: B01J23/86
Filed: 1965-02-25
Abstract: Oxidation catalysts comprise a powdered mixture of 5-40% each of CnO and MgO on an alumina or vermiculite support.  Binders such as copper or magnesium stearate may be used to form the catalysts into suitable shapes prior to firing.  The catalysts may be deliberately poisoned with lead to test their oxidative efficiency in such circumstances.
Patent GB-827926-A (GB)
Title: Improvements relating to electrical distributor switches
Inventor: ZUPPIROLI GUIDE
IPC: H01H3/40
Filed: 1958-03-14
Abstract: 827,926. Photo-electric control. INNOCENTI SOC. GENERALE PER L'INDUSTRIA METALLURGICA E MECCANICA. March 14, 1958, No. 8215/58. Class 40 (3). [ALso in Group XXXVII] A photo-electric control is utilized in a rotary distributer (see Group XXXVII) for suppressing sparking when passing off and on to the contacts. The distributer comprises a main drum 7 and three equally spaced auxiliary drums 20 (only one shown), the drum 7 carrying nine contacts 13 and drums 20 nine contact segments 29, brushes interconnecting the contacts 13 in turn to the contacts of the drums 20 and to the respective external circuits. A bellshaped partition 44 rotating with drum 7 has slots 44a which allow light from a lamp 42 to reach a photo-electric cell 46, the output from which is utilized to pulse the feed to a distributer supply terminal 12 in synchronism with the passage of current on and off contacts 13. A larger slot 44b ensures cut-off of the supply when passing from one drum 20 to the next (Fig. 5, not shown). Specification 827,927, [Group XI], is referred to.
Patent GB-125076-A (GB)
Title: Improvements in Refrigeration of Fish and other Foods.
Inventor: DAHL NEKOLAI
IPC: A23B4/06
Filed: 1919-04-02
Abstract: 125,076. Dahl, N. April 3, 1918, [Convention date]. Cooling fish &c. - In the freezing of fish and other food substances by a cold circulating liquid, the liquid is admitted at the centre of the mass of fish &c. in a container, and flows through the mass in all directions, instead of, as usual, flowing in one direction only. The outlets from the containers are arranged according to the specific gravity of the substances to be frozen, so that the substances do not tend to pack together. For light substances, the outlets are at the bottom, and for heavy substances, at the top. Outlets adapted to be plugged may also be arranged at the sides of the containers. The Figure shows containers in the forms of a barrel 1, a case 3, and a sack 4. The liquid is supplied through pipes 6 connected by flexible hose 11 with a main 7. The containers may be arranged in the open air, as shown, or be submerged in liquid. Where sacks are used they may be placed in frames or moulds to give them a convenient shape for storage when frozen. These flames may be left on or removed. The method may be employed for large stationary containers, several liquid inlets being provided.
Patent GB-645477-A (GB)
Title: Improved recuperators or regenerators for the interchange of heat between gases
IPC: F28D19/02
Filed: 1947-03-27
Abstract: 645,477. Rotary regenerators for furnaces &c. SKINNER, A. J. March 27, 1947, No. 8388. [Class 64(i)] In a rotary regenerator in which a rotating cylinder moves through and transfers heat from a hot gas stream to a cold gas stream the cylinder comprises an outer circular wall of.vertically disposed ceramic or refractory rods 15, spaced apart, and a circular inner wall 16 of perforated material concentric with the outer wall, an annular space filled with balls, chippings or the like 17 of refractory material, being formed between the two circular walls by refractory end walls 6, 10, the cylinder rotating within a casing 1, 1a lined with refractory material 2, and rotating around a stationary perforate hollow cylindrical member divided longitudinally into two ducts 13, 14 respectively constituting passages for the cold gas stream and the hot gas stream. The inner wall 16 of the cylinder may comprise a circle of spaced rods similar to the rods 15. Radial imperforate partitions, Fig. 2, (not shown), may be provided in the annular space within the cylinder to minimize gas leakage from one stream to the other and radial perforate partitions or alternatively horizontal ring-like partitions may also be provided in the annular space to prevent packing of the refractory material 17. Layers 19 of sand or the like, serve as a bed for the rotating cylinder and for the ducts 13, 14 and serve to further minimize gas leakage. The gas streams flow radially through the cylinder, the hot gas, e.g. flue gas, flowing from the passage 3 to the duct 14 and the cold gas, e.g.. air for combustion, flowing from the duct 13 to the passage 4. According to the Provisional Specification the character of the refractory material 17 may vary from the outside to the inside of the cylinder. Specification 543,093 is referred to.
Patent GB-692707-A (GB)
Title: Improvements relating to tapping means for electric cables contained in trunking
Inventor: STEVENS GEOFFREY ARTHUR
IPC: H01R4/32
Filed: 1950-04-04
Abstract: 692,707. Fuse - boards ; cable - couplings. POWER CENTRE CO., Ltd. April 4, 1951 [April 4, 1950], No. 8389/50. Class 38 (i). Means for taking tappings from cables located in trunking 13 comprises an insulating block 11 situated in the trunking and having a plurality of open-sided U-shaped channels 16 for the cables, one or more of said channels containing a metal block 22 which has a U-shaped channel 33 for .receiving a bared part of a cable gripped therein by a screw 38. Block 22 also has an opening 36 in which a tapping conductor 27 is received and gripped. Channels 16 are closed by a cover 17 and the conductors 27 pass out through the trunking to, for example, a fusebox 44 secured to one outer face thereof.
Patent GB-464095-A (GB)
Title: A corrosion resistant alloy
IPC: C22C38/16
Filed: 1935-07-05
Abstract: A corrosion-resistant alloy comprises 25-80 per cent of iron, 5-25 per cent of phosphorus, 4-70 per cent of copper, and 0-30 per cent of one or more of the metals antimony, arsenic, bismuth, cadmium, chromium, manganese, molybdenum, tin, tungsten, vanadium, zinc. Aluminium is excluded from the alloy and silicon does not exceed 0,5 per cent.  Specific examples are given of alloys of iron, copper, phosphorus, tin; iron, copper, phosphorus with silicon, manganese, carbon as impurities.  Scrap metal may be used in making the alloy; for instance, brass scrap may be used to introduce copper and zinc together with small quantities of antimony, arsenic, bismuth, cadmium, and tin.  Calcium phosphate may be used to introduce phosphorus and as a flux.  Specification 463,311 is referred to.
Patent GB-609614-A (GB)
Title: Arrangement in mining hoists
IPC: B66B17/04
Filed: 1946-03-19
Abstract: 609,614. Mine cages. ALLMANNA SVENSKA ELECTRISKA AKTIEBOLAGET. March 19, 1946, Nos. 8430 and 8431. Convention dates, April 13, 1945, and July 6, 1945. [Classes 78 (iii) and 78 (iv)] In mining hoists the bottom of the cage is movable in relation to the hoisting rope so that when the hoist is stopped at a level, the relative movement between the hoisting rope and the cage bottom ensures that the tracks or the bottom may be brought to the same level as the tracks leading to the shaft from the different mining galleries. The cage 2 is carried by two side plates held by beams 5 and by beams 7 at the top to which the rope 1 is attached. The cage is provided with four pins slidable in slots in the side plates of the suspension device 4. Hooks or bolts 3 project from the side of the shaft and support the cage during loading and unloading to ensure that the tracks 11 in the cage are on a level with the tracks 12. The rope is kept taut by the suspension device so that a pulley winder can be used instead of a drum winder. In one modification the cage is directly suspended by the rope and the bottom is movable with respect to the cage. In another modification the bottom rests on lifting machinery which in turn rests on a suspension device attached to the hoisting rope. When a cage stops at a level, the lifting machinery is started by an electric member at the level and adjusts the level of the cage to make the tracks level.
Patent GB-743726-A (GB)
Title: Improvements in and relating to the electrodeposition of nickel
Inventor: BROWN HENRY
IPC: C25D3/18
Filed: 1953-03-26
Abstract: 743,726. Electrodeposition of nickel. UDYLITE CORPORATION. March 26, 1953, No. 8458/53. Addition to 638,868. Class 41. A bath for the electrodeposition of bright nickel comprises an aqueous acidic solution of at least one nickel salt, a minor proportion of at least one sulphur-containing brightener in the form of an organic sulphonamide, sulphonimide or sulphonic acid, and a minor proportion of at least one bath-soluble compound having the general formula represents a pyridine, quinoline or isoquinoline ring or C-methyl or ethyl homologue thereof, A represents an anion of a water-soluble acid, R represents an aliphatic radical containing from 1 to 4 carbon atoms, R<SP>1</SP> represents a halogen atom, and x is an integer from 0 to 2. The aliphatic radical R may be saturated or unsaturated and may be methyl, ethyl, propyl, butyl, allyl, vinyl, methallyl, hydroxy-methyl or ethyl, 2-ethanol, 3-propanol, methyl acetate or ethyl acetate radicals. The anion A may be chlorine, bromine, iodine, sulphate, methosulphate, acetate, citrate, or tartrate. Quinoline and iso-quinoline compounds are preferably used in amounts of 0.003 grams/litre to 0.04 grams/litre, and pyridine compounds in amounts of 0.01 grams/litre to 0.15 grams/litre. The sulphur-containing brighteners are preferably used in amounts up to 0.5 per cent of the solution. The sulphonic acids may be in the form of salts, such as nickel, sodium or potassium salts. The nickel salts may be chloride, sulphate, fluoborate, sulphamate. The solution may also contain buffers such as boric acid, formic acid, citric acid or fluoboric acid. Lists are given of suitable sulphur-containing brighteners and pyridine, quinoline and iso-quinoline compounds.
Patent GB-601684-A (GB)
Title: Improvements in or relating to liquid phase chemical reactions
IPC: B01J4/00
Filed: 1945-04-05
Abstract: A method of adding a liquid reagent to a reaction liquid in a vessel comprises directing a stream of reagent on to one surface of a baffle disposed above the liquid, and a stream of reaction liquid on to the opposite surface so that both streams flow over the baffle and mingle at the periphery thereof.  Preferably, the reagent is dropped on to the upper, convex, side of a dish-shaped horizontal baffle, and the reaction liquid pumped through a vertical nozzle against the underside of the baffle.  An additional small flow of reaction liquid may be dropped on to the upper side of the baffle.  The main stream of the liquid may be preheated.  The invention is exemplified by the mixing of cashew nut shell liquids with an acidic catalyst such as sulphuric acid to effect polymerization.  Specification 601,683 is referred to.ALSO:A method of mixing a liquid reagent and a reaction liquid in a vessel comprises directing a stream of reagent onto one surface of a baffle disposed above the reaction liquid and a stream of reaction liquid onto the opposite surface so that both streams flow over the baffle and mingle at the periphery thereof. Preferably, the reagent is dropped onto the upper, convex, side of a dish-shaped horizontal baffle, and the reaction liquid pumped through a vertical nozzle against the underside of the baffle.  An additional small flow of reaction liquid may be dropped onto the upper surface of the baffle.  The main stream of the liquid may be preheated.  The invention is exemplified by the mixing of cashew nut shell liquids with an acidic catalyst such as sulphuric acid to effect polymerisation.  Specification 601,683 is referred to.
Patent GB-453856-A (GB)
Title: Improvements relating to pattern mechanism
IPC: D04B27/26
Filed: 1935-03-19
Abstract: 453,856. Pattern surfaces. BRITISH CELANESE, Ltd., 22, Hanover Square, London, and WINTER, A. S:, and JACKSON, T., c/o British Celanese, Ltd., Spondon, near Derby. March 19, 1935, No. 8525. [Class 74 (ii)] [See also Group IX] Relates to a device intended to replace pattern wheels as used in warp knitting or other machines. A quadrant 13 pivoted at 14 to a bracket bears at 16 on stepped pattern units 20 and operates the guide-bar 8 by means of flexible connections. The units are mounted on base plates 21 carried by foot pieces 30 upon a pair of chains 29 connected together at intervals. The chains are hung on sprockets 32 . . . 34 and driven by worm &c. gear 42 ... 47. Each chain is supported by an abutment 51 so as to form a substantially continuous surface where it passes under the quadrant 13. In a modified form, the pattern units are jointed together and are toothed on the undersides to gear with the wheel 47.
Patent GB-854029-A (GB)
Title: Improvements in or relating to wool pulling machines
IPC: C14B1/02
Filed: 1959-03-12
Abstract: 854,029. Wool-pulling machines. DURAND, J. March 12, 1959 [March 21, 1958], No. 8529/59. Class 76. In a wool-pulling machine, the skin carrier consists of a drum (with means for fastening the skin to be unhaired along one of its generatrices) which is in continuous rotation during operation; the rotary tool-holder consists of a pair of parallel flanges secured on a common rotary shaft and carrying pins (spaced circularly about the shaft axis) on which are pivotally mounted arms each angularly displaceable between stops carried by the flanges, the arms being normally urged by springs in one direction and being connected in pairs by fittings each having secured thereon a blade of flexible material, the tool holder shaft being adapted to hand control to enable the tool holder to be moved relatively to the skin carrier. The skin carrier is preferably formed with a longitudinal cavity in which an arm biased by a return spring is pivoted on a hinge pin and carries a transverse rod adapted to clamp the skin against one of the longitudinal edges of the cavity when said arm is freely responsive to the return spring. Fig. 1 shows a fragmentary-radial section of a suitable tool holder. On the flange 27 are a number of aligned pivot pins 28 spaced along a circle concentric to the each pin 28 has pivotally mounted thereon an arm 29 responsive to a tension spring 31 urging the relevant arm against an adjustable stop 32, while another stop 33 limits the displacement of the arm 29 in the opposite direction during the wool pulling operation. The arms 29 are interconnected in pairs by angle iron or like fittings 34 on each of which a blade 35 of resilient material such as rubber is secured for the purpose of unhairing the skin as it is brought into contact with the blades by the rotating skin carrier. Figs. 2-6 (not shown) depict respectively a fragmentary front elevational view of the tool holder and lateral elevational views of a complete machine before, during, upon completion of and after the unhairing operation.
Patent GB-833140-A (GB)
Title: Abrading tool holder
IPC: B25G1/00
Filed: 1958-03-18
Abstract: 833,140. Holders for files. MILLERS FALLS CO. March 18, 1958 [June 20, 1957], No. 8615/58. Class 61. A holder for an abrading blade 16 comprises a metal frame 10 having flanges 18 which support the marginal edges of the blade, interconnecting portions at each end of the frame and an intermediate web 19, the forward and rearward end portions of the frame being upwardly off-set to provide clearance for the blade attaching pins 20, 24. The pin 20 is fast in the front cross piece of the frame and has an annular groove in the projecting end to receive one edge of a hole 22 in one end of the blade. The other end of the blade is secured by a pin 24 depending through a slot 26 in the rear of the frame the end of the pin having an annular groove to receive the edge of the other hole 27. To lock the blade the pin 24 is drawn rearwardly by rotating a knob 28 which threadedly receives a rearwardly bent portion of the pin. The knob 28 is grooved at 30 to receive the opposite walls of a slot in the end wall 32 of the frame 10. The handle 12 which is threaded into the frame cross piece 38 maintains the knob in the slot and closes a chamber formed by the frame member 38, rear wall 32, vertical web 40 and bottom wall 42.
Patent GB-369397-A (GB)
Title: Improvements relating to bomb suspensions for aircraft
IPC: B64D1/06
Filed: 1931-03-20
Abstract: 369,397. Hooks. SWIATECKI, W., 49, Krakowskie Przedmiescie Street, Lublin, Poland. March 20, 1931, No. 8667. [Class 89 (ii).] In order to reduce the force necessary to operate a trigger member S to release a member R, which is pivoted at O and supports a bomb Q, there is interposed between these members a plurality of pairs of members such as A1, B1 in series, three such pairs, namely A1, B1; A2, B2 ; and A3, B3 being shown on the drawing. The first member A1 is a link pivoted at k to the bomb-holding member R and at k1 to one end of the member B1, the other end of which is pivoted at a fixed point O1. The next link A2 is similarly pivoted at k1 to the member B1 and at k2 to the member B2, which is pivoted at a fixed point 02. The next pair of members A3, B3 is similarly arranged, and the joint k3 thereof is engaged by the trigger member S, which is pivoted at T. Each of these pairs of members is normally at its dead-centre, so that a small force only is needed to pull the trigger. The stem of the bomb held by the member R is confined by guides C to prevent accidental release.
Patent GB-792027-A (GB)
Title: Stabilised penicillin salts
IPC: A61K31/43
Filed: 1956-03-20
Abstract: A penicillin salt or mixture of salts is stabilized against discolouration and deterioration by admixture with 0.5 to 5 per cent of at least one alkaline earth metal chloride, e.g. calcium chloride or magnesium chloride, preferably in the anhydrous form. The salts are preferably alkali metal, e.g. sodium or organic base salts of penicillin.  The stabilized salts are employed medicinally (see Group VI).ALSO:A solid penicillin salt composition stabilized against deterioration and discolouration comprises an intimate mixture of a penicillin salt or salts with 0.5 to 5 per cent of at least one alkaline earth metal chloride, e.g. calcium chloride and magnesium chloride, preferably in the anhydrous form.  The penicillin salt is preferably an alkali metal or organic base salt of penicillin. Optional ingredients are (a) other drug (including antibiotics); (b) inert diluent; (c) surface-active agent, e.g. "Tween" (Registered Trade Mark); (d) thickening agent, e.g. carboxymethylcellulose; or (e) anti-foaming agents such as silicones.  In the example, sodium penicillin is stabilized by admixture with calcium chloride.